If you have nothing else in your description, it will take about a week.
I have a good experience in development of webScraping which is very similar to your's.
You will be able to make sure about it by looking at myMore

Hi! I am an experienced C# developer with over 4 years of experience. I have read your requirements and can complete the work for you with assurance of quality. I will develop the software for you using Visual Studio 2More